发明名称 INJECTION MOLD WHEREIN MOVEABLE CAVITY PORTIONS ACT TO CLOSE THE MOLD GATES AND FURTHER COMPRESS THE MOLD MATERIAL
摘要 A method of molding and a mold are provided for encapsulating devices such as axial lead cylindrical electrical devices in which two separable portions of the mold closely embrace the axial leads near the axial ends of the mold cavity and one of the mold portions includes piston-like parts, one for each molding cavity, which moves between at least two positions. In one position of a piston-like part of the mold, and mold cavity is open to receive encapsulating fluid and in the other position of the part the mold cavity is completely closed. In a modification, the piston-like parts are each shaped and positioned to form parts of adjacent molding cavities. The molding process involves supplying encapsulating fluid to the several cavities by applying pressure to the whole body of fluid and applying higher pressure to the fluid in each molding cavity.
申请公布号 US3685784(A) 申请公布日期 1972.08.22
申请号 USD3685784 申请日期 1969.11.19
申请人 MOTOROLA INC. 发明人 KEITH GORDON SPANJER
分类号 B29C35/00;B29C45/00;B29C45/14;B29C45/56;B29C61/00;(IPC1-7):B29C1/00 主分类号 B29C35/00
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